3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php exec("ssh -p ".escapeshellarg("22' salut23"). " uptime", array());
Output for 5.3.0 - 5.4.13
Fatal error: Only variables can be passed by reference in /in/vNKcE on line 2
Process exited with code 255.